I've tuned my sdrive20i with a hc-performance custom map which takes the power values up to 300hp and around 460 nm , unfortunately no dyno available here however the it feel like a totally different ride , tried few 0-100 all came up between 4.6-5 seconds depending on tires grip , 100-200 around 13 seconds.
I believe this would be the same output for the 30i considering its the same B48d engine used in both cars I guess
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